2009 GMC SIERRA seats

Seats and Restraint System............................. 1-1
Head Restraints
......................................... 1-3
Front Seats
............................................... 1-4
Rear Seats
..............................................1-14
Safety Belts
.............................................1-16
Child Restraints
.......................................1-38
Airbag System
.........................................1-73
Restraint System Check
............................1-90
Features and Controls..................................... 2-1
Keys
........................................................ 2-3
Doors and Locks
......................................2-10
Windows
.................................................2-15
Theft-Deterrent Systems
............................2-18
Starting and Operating Your Vehicle
...........2-22
Mirrors
....................................................2-57
Object Detection Systems
..........................2-62
OnStar
®System
......................................2-71
Universal Home Remote System
................2-74
Storage Areas
.........................................2-81
Sunroof
..................................................2-85Instrument Panel............................................. 3-1
Instrument Panel Overview
.......................... 3-4
Climate Controls
......................................3-24
Warning Lights, Gages, and Indicators
........3-33
Driver Information Center (DIC)
..................3-53
Audio System(s)
.......................................3-85
Driving Your Vehicle....................................... 4-1
Your Driving, the Road, and the Vehicle
....... 4-2
Towing
...................................................4-45
Service and Appearance Care.......................... 5-1
Service
..................................................... 5-4
Fuel
......................................................... 5-6
Checking Things Under the Hood
...............5-12
Rear Axle
...............................................5-49
Four-Wheel Drive
.....................................5-51
Front Axle
...............................................5-53
Noise Control System
...............................5-54
Headlamp Aiming
.....................................5-55
Bulb Replacement
....................................5-58
2009 GMC Sierra Owner ManualM

Head Restraints...............................................1-3
Front Seats......................................................1-4
Manual Seats................................................1-4
Power Seats..................................................1-5
Manual Lumbar..............................................1-6
Power Lumbar ...............................................1-7
Heated Seats.................................................1-8
Memory Seat, Mirrors, and Pedals....................1-8
Reclining Seatbacks......................................1-10
Seatback Latches.........................................1-13
Center Seat.................................................1-14
Rear Seats.....................................................1-14
Rear Seat Operation (Extended Cab)...............1-14
Rear Seat Operation (All Except
Extended Cab)..........................................1-15
Safety Belts...................................................1-16
Safety Belts: They Are for Everyone................1-16
How to Wear Safety Belts Properly.................1-21
Lap-Shoulder Belt.........................................1-30
Safety Belt Use During Pregnancy..................1-36
Lap Belt (Crew and Extended Cab).................1-36
Safety Belt Extender.....................................1-37Child Restraints.............................................1-38
Older Children..............................................1-38
Infants and Young Children............................1-41
Child Restraint Systems.................................1-45
Where to Put the Restraint.............................1-48
Lower Anchors and Tethers for
Children (LATCH)......................................1-49
Securing a Child Restraint in a
Rear Seat Position....................................1-58
Securing a Child Restraint in the
Center Front Seat Position..........................1-61
Securing a Child Restraint in the Right
Front Seat Position (With Airbag
Off Switch)...............................................1-62
Securing a Child Restraint in
the Right Front Seat Position
(With Passenger Sensing System)...............1-66
Securing a Child Restraint in the
Right Front Seat Position (Heavy Duty
Crew Cab Only).......................................
.1-70
Section 1 Seats and Restraint System
1-1

Airbag System...............................................1-73
Where Are the Airbags?................................1-75
When Should an Airbag Inate?.....................1-77
What Makes an Airbag Inate?.......................1-79
How Does an Airbag Restrain?.......................1-79
What Will You See After an
Airbag Inates?.........................................1-79
Airbag Off Switch..........................................1-81
Passenger Sensing System............................1-84
Servicing Your Airbag-Equipped Vehicle...........1-88
Adding Equipment to Your Airbag-Equipped
Vehicle....................................................1-89Restraint System Check..................................1-90
Checking the Restraint Systems......................1-90
Replacing Restraint System Parts
After a Crash............................................1-91
Section 1 Seats and Restraint System
1-2

Head Restraints
The front seats have adjustable head restraints in the
outboard seating positions.
{CAUTION:
With head restraints that are not installed and
adjusted properly, there is a greater chance that
occupants will suffer a neck/spinal injury in a
crash. Do not drive until the head restraints for all
occupants are installed and adjusted properly.
Adjust the head restraint so that the top of the restraint is
at the same height as the top of the occupant’s head.
This position reduces the chance of a neck injury in a
crash.
1-3

Pull the head restraint up to raise it. To lower the head
restraint, press the button, located on the top of the
seatback, and push the restraint down.
Push down on the head restraint after the button is
released to make sure that it is locked in place.
The head restraints are not designed to be removed.
The rear seat has head rests that can be adjusted
up and down.
Front Seats
Manual Seats
{CAUTION:
You can lose control of the vehicle if you try to
adjust a manual driver’s seat while the vehicle is
moving. The sudden movement could startle and
confuse you, or make you push a pedal when you
do not want to. Adjust the driver’s seat only when
the vehicle is not moving.
1-4

If the vehicle has a manual seat, it can be moved
forward or rearward.
1. Lift the bar to unlock
the seat.
2. Slide the seat to the
desired position and
release the bar.
Try to move the seat with your body to be sure the seat
is locked in place.Power Seats
On a vehicle with power seats, the controls used to
operate them are located on the outboard side of
the seats.
Move the seat forward or rearward by sliding the control
forward or rearward.
Driver’s Seat with Power Seat Control, Power
Recline, and Power Lumbar shown
1-5

Your vehicle may have additional features to adjust your
vehicle’s power seat:
Raise or lower the front part of the seat cushion by
moving the front of the control up or down.
Raise or lower the rear part of the seat cushion by
moving the rear of the control up or down.
Raise or lower the entire seat by moving the entire
control up or down.
On seats with power reclining seatbacks, the control is
located behind the power seat control on the outboard
side of the seats. See “Power Reclining Seatbacks”
underReclining Seatbacks on page 1-10.
A vehicle with a memory function allows seat settings to
be saved and recalled. SeeMemory Seat, Mirrors,
and Pedals on page 1-8for more information.
Manual Lumbar
On vehicles with this feature the control is located on
the outboard side of the seat.
Increase or decrease lumbar support by turning the
knob forward or rearward.
1-6

Power Lumbar
On seats with power lumbar, the controls used to
operate this feature are located on the outboard side of
the seats.
To increase lumbar support, press and hold the
front of the control.
To decrease lumbar support, press and hold the
rear of the control.The vehicle may have additional features to adjust your
vehicle’s power seat:
To raise the height of the lumbar support, press
and hold the top of the control.
To lower the height of the lumbar support, press
and hold the bottom of the control.
Release the control when the lower seatback reaches
the desired level of lumbar support.
Your vehicle may have a memory function which allows
seat settings to be saved and recalled. SeeMemory
Seat, Mirrors, and Pedals on page 1-8for more
information.
Keep in mind that as your seating position changes,
as it may during long trips, so should the position of
your lumbar support. Adjust the seat as needed.
1-7